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Return to cyclical activity in ewes with energy and protein restriction during lactation period Retorno a atividade cíclica em ovelhas deslanadas submetidas à restrição calórica ou protéica durante o período de lactação

Author(s): Lourival de Souza Silva Júnior | Luciana Keiko Hatamoto-Zervoudakis | Luciano da Silva Cabral | José Ricardo Souza | Eleonora Araújo Barbosa | Giselde Marques Angreves Silva | Danillo Salgado Barros

Journal: Revista Brasileira de Saúde e Produção Animal
ISSN 1519-9940

Volume: 10;
Issue: 2;
Date: 2009;
Original page

Inadequate ingestion of nutrients in quality and quantities is common cause of infertility in ewe and mechanisms involved between nutrition and reproduction is changeable. The aim of this work was to evaluate the energy or protein restriction during lactation in ewe on return of reproductive cyclic activity. Twenty one females in post-partum was divided randomly in 3 treatments: control treatment (CT, diet supply the requirements for maintenance and lactation), caloric restriction (CRT, supplied ½ of the diet of the CT), protein restriction (PRT, supplied 1/3 of the protein of the CT). Trans-rectal ultrasound was performed to ovary evaluation weekly and the body weight were measured biweekly. Effect of treatment on number (P
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